I have been on Armour for maybe 6 months, after coming off of the synthetic Synthroid. I have been feeling very fatigued lately and have scheduled an appointment with my doctor for blood test tomorrow morning. The only difference I noticed with my hair is, it has not shed as much. I am thinking on going back on the synthetic (will be talking to the doctor about this), due to the fatigue. I am on 90 mg a day with the Armour and when I was on the synthroid it was 0.125 at one time. I do not have a thyroid, due to surgery. Thanks for any help.